oj.uz

Submission #1078783

# Submission time Handle Problem Language Result Execution time Memory
1078783 2024-08-28T06:16:21 Z Muhammad_Aneeq Connecting Supertrees (IOI20_supertrees) C++17
40 / 100
 165 ms 24200 KB 
#include <vector>
#include <iostream>
using namespace std;
int const MAXN=1000;
void build(vector<vector<int>> b);
int construct(vector<vector<int>> p)
{
	int n=p.size();
	bool subt1=1,subt2=1,subt3=1,subt4=1;
	for (int i=0;i<n;i++)
	{
		for (int j=i+1;j<n;j++)
		{
			if (p[i][j]!=1)
				subt1=0;
			if (p[i][j]>1)
				subt2=0;
			if (p[i][j]==1)
				subt3=0;
			if (p[i][j]>2)
				subt4=0;
		}
	}
	if (subt1)
	{
		vector<vector<int>>b(n,vector<int>(n));
		for (int i=1;i<n;i++)
			b[0][i]=b[i][0]=1;
		build(b);
		return 1;
	}
	if (subt2)
	{
		bool vis[n]={};
		int head[n]={};
		vector<vector<int>>b(n,vector<int>(n));
		for (int i=0;i<n;i++)
		{
			if (!vis[i])
			{
				vis[i]=1;
				head[i]=i;
				for (int j=0;j<n;j++)
				{
					if (vis[j])
						continue;
					if (p[i][j])
					{
						vis[j]=1;
						b[i][j]=b[j][i]=1;
						head[j]=i;
					}
				}
			}
		}
		for (int i=0;i<n;i++)
		{
			for (int j=0;j<n;j++)
			{
				if (p[i][j]&&head[i]!=head[j])
					return 0;
				if (p[i][j]==0&&head[i]==head[j])
					return 0;
			}
		}
		build(b);
		return 1;
	}
	if (subt3)
	{
		bool vis[n]={};
		int head[n]={};
		vector<vector<int>>b(n,vector<int>(n));
		for (int i=0;i<n;i++)
		{
			if (!vis[i])
			{
				vector<int>z;
				for (int j=0;j<n;j++)
				{
					if (p[i][j])
						z.push_back(j);
				}
				if (z.size()==1)
				{
					head[i]=i;
					continue;
				}
				if (z.size()==2)
					return 0;
				for (int j=0;j<z.size();j++)
				{
					vis[z[j]]=1;
					head[z[j]]=i;
					b[z[j]][z[(j+1)%z.size()]]=b[z[(j+1)%z.size()]][z[j]]=1;
				}
			}
		}
		for (int i=0;i<n;i++)
		{
			for (int j=i+1;j<n;j++)
			{
				if (p[i][j]&&head[i]!=head[j])
					return 0;
				if (p[i][j]==0&&head[i]==head[j])
					return 0;
			}
		}
		build(b);
		return 1;
	}
	bool seen[n]={};
	int head[n]={};
	bool vis[n]={};
	vector<vector<int>>b(n,vector<int>(n,0));
	for (int i=0;i<n;i++)
	{
		if (!seen[i])
		{
			seen[i]=1;
			head[i]=i;
			for (int j=0;j<n;j++)
			{
				if (seen[j])
				{
					if (p[i][j])
						return 0;
					continue;
				}
				if (p[i][j]==1)
				{
					seen[j]=1;
					b[i][j]=b[j][i]=1;
					head[j]=i;
				}
			}
		}
	}
	for (int i=0;i<n;i++)
	{
		for (int j=0;j<n;j++)
		{
			if (p[i][j]==1&&head[i]!=head[j])
				return 0;
			if (p[i][j]==0&&head[i]==head[j])
				return 0;
		}
	}
	for (int i=0;i<n;i++)
	{
		if (vis[head[i]])
			continue;
		vector<int>x;
		for (int j=0;j<n;j++)
		{
			if (p[i][j]&&!vis[head[j]])
			{
				x.push_back(head[j]);
				vis[head[j]]=1;
			}
		}
		if (x.size()==2)
			return 0;
		if (x.size()==1)
			continue;
		int pa=head[i];
		for (int  j=0;j<x.size();j++)
		{
			int u=x[j],v=x[(j+1)%x.size()];
			head[u]=head[v]=pa;
			b[u][v]=b[v][u]=1;
		}
	}
	for (int i=0;i<n;i++)
	{
		for (int j=0;j<n;j++)
		{
			int u=head[head[i]],v=head[head[j]];
			if (u==v)
				continue;
			if (p[i][j]!=2&&b[u][v])
				return 0;
			if (p[i][j]==2&&!b[u][v])
				return 0;
		}
	}
	build(b);
	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:91:19: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   91 |     for (int j=0;j<z.size();j++)
      |                  ~^~~~~~~~~
supertrees.cpp:167:18: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  167 |   for (int  j=0;j<x.size();j++)
      |                 ~^~~~~~~~~
supertrees.cpp:9:31: warning: variable 'subt4' set but not used [-Wunused-but-set-variable]
    9 |  bool subt1=1,subt2=1,subt3=1,subt4=1;
      |                               ^~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 6 ms 1372 KB Output is correct
7 Correct 119 ms 23960 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 6 ms 1372 KB Output is correct
7 Correct 119 ms 23960 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 436 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 6 ms 1372 KB Output is correct
13 Correct 124 ms 24064 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 59 ms 14216 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 38 ms 6228 KB Output is correct
21 Correct 119 ms 23888 KB Output is correct
22 Correct 120 ms 23888 KB Output is correct
23 Correct 130 ms 23376 KB Output is correct
24 Correct 123 ms 24200 KB Output is correct
25 Correct 55 ms 14160 KB Output is correct
26 Correct 51 ms 14080 KB Output is correct
27 Correct 120 ms 23888 KB Output is correct
28 Correct 119 ms 23944 KB Output is correct

Subtask #3
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 600 KB Output is correct
8 Correct 6 ms 1376 KB Output is correct
9 Correct 118 ms 23892 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 5 ms 1372 KB Output is correct
13 Correct 115 ms 23892 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 54 ms 14212 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 31 ms 6324 KB Output is correct
22 Correct 116 ms 23968 KB Output is correct
23 Correct 165 ms 24148 KB Output is correct
24 Correct 126 ms 24056 KB Output is correct
25 Correct 67 ms 13992 KB Output is correct
26 Correct 52 ms 14160 KB Output is correct
27 Correct 116 ms 24148 KB Output is correct
28 Correct 120 ms 23944 KB Output is correct
29 Correct 60 ms 14068 KB Output is correct

Subtask #4
0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 30 ms 6400 KB Output is correct
5 Correct 132 ms 24076 KB Output is correct
6 Correct 122 ms 23896 KB Output is correct
7 Correct 120 ms 23932 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 28 ms 6144 KB Output is correct
10 Correct 117 ms 23892 KB Output is correct
11 Correct 114 ms 24144 KB Output is correct
12 Correct 119 ms 23944 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Incorrect 0 ms 348 KB Answer gives possible 0 while actual possible 1
15 Halted 0 ms 0 KB -

Subtask #5
0 / 21.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 6 ms 1372 KB Output is correct
7 Correct 119 ms 23960 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 436 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 6 ms 1372 KB Output is correct
13 Correct 124 ms 24064 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 59 ms 14216 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 38 ms 6228 KB Output is correct
21 Correct 119 ms 23888 KB Output is correct
22 Correct 120 ms 23888 KB Output is correct
23 Correct 130 ms 23376 KB Output is correct
24 Correct 123 ms 24200 KB Output is correct
25 Correct 55 ms 14160 KB Output is correct
26 Correct 51 ms 14080 KB Output is correct
27 Correct 120 ms 23888 KB Output is correct
28 Correct 119 ms 23944 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 0 ms 344 KB Output is correct
31 Correct 0 ms 344 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 600 KB Output is correct
36 Correct 6 ms 1376 KB Output is correct
37 Correct 118 ms 23892 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 5 ms 1372 KB Output is correct
41 Correct 115 ms 23892 KB Output is correct
42 Correct 1 ms 344 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 3 ms 860 KB Output is correct
45 Correct 54 ms 14212 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 31 ms 6324 KB Output is correct
50 Correct 116 ms 23968 KB Output is correct
51 Correct 165 ms 24148 KB Output is correct
52 Correct 126 ms 24056 KB Output is correct
53 Correct 67 ms 13992 KB Output is correct
54 Correct 52 ms 14160 KB Output is correct
55 Correct 116 ms 24148 KB Output is correct
56 Correct 120 ms 23944 KB Output is correct
57 Correct 60 ms 14068 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 3 ms 860 KB Output is correct
61 Correct 54 ms 14196 KB Output is correct
62 Correct 0 ms 348 KB Output is correct
63 Incorrect 0 ms 348 KB Answer gives possible 0 while actual possible 1
64 Halted 0 ms 0 KB -

Subtask #6
0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 1 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 6 ms 1372 KB Output is correct
7 Correct 119 ms 23960 KB Output is correct
8 Correct 1 ms 344 KB Output is correct
9 Correct 0 ms 344 KB Output is correct
10 Correct 0 ms 436 KB Output is correct
11 Correct 1 ms 344 KB Output is correct
12 Correct 6 ms 1372 KB Output is correct
13 Correct 124 ms 24064 KB Output is correct
14 Correct 1 ms 344 KB Output is correct
15 Correct 1 ms 348 KB Output is correct
16 Correct 3 ms 860 KB Output is correct
17 Correct 59 ms 14216 KB Output is correct
18 Correct 1 ms 344 KB Output is correct
19 Correct 0 ms 348 KB Output is correct
20 Correct 38 ms 6228 KB Output is correct
21 Correct 119 ms 23888 KB Output is correct
22 Correct 120 ms 23888 KB Output is correct
23 Correct 130 ms 23376 KB Output is correct
24 Correct 123 ms 24200 KB Output is correct
25 Correct 55 ms 14160 KB Output is correct
26 Correct 51 ms 14080 KB Output is correct
27 Correct 120 ms 23888 KB Output is correct
28 Correct 119 ms 23944 KB Output is correct
29 Correct 1 ms 348 KB Output is correct
30 Correct 0 ms 344 KB Output is correct
31 Correct 0 ms 344 KB Output is correct
32 Correct 0 ms 348 KB Output is correct
33 Correct 1 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 600 KB Output is correct
36 Correct 6 ms 1376 KB Output is correct
37 Correct 118 ms 23892 KB Output is correct
38 Correct 1 ms 348 KB Output is correct
39 Correct 0 ms 348 KB Output is correct
40 Correct 5 ms 1372 KB Output is correct
41 Correct 115 ms 23892 KB Output is correct
42 Correct 1 ms 344 KB Output is correct
43 Correct 0 ms 348 KB Output is correct
44 Correct 3 ms 860 KB Output is correct
45 Correct 54 ms 14212 KB Output is correct
46 Correct 0 ms 348 KB Output is correct
47 Correct 0 ms 348 KB Output is correct
48 Correct 0 ms 348 KB Output is correct
49 Correct 31 ms 6324 KB Output is correct
50 Correct 116 ms 23968 KB Output is correct
51 Correct 165 ms 24148 KB Output is correct
52 Correct 126 ms 24056 KB Output is correct
53 Correct 67 ms 13992 KB Output is correct
54 Correct 52 ms 14160 KB Output is correct
55 Correct 116 ms 24148 KB Output is correct
56 Correct 120 ms 23944 KB Output is correct
57 Correct 60 ms 14068 KB Output is correct
58 Correct 0 ms 348 KB Output is correct
59 Correct 0 ms 348 KB Output is correct
60 Correct 0 ms 348 KB Output is correct
61 Correct 30 ms 6400 KB Output is correct
62 Correct 132 ms 24076 KB Output is correct
63 Correct 122 ms 23896 KB Output is correct
64 Correct 120 ms 23932 KB Output is correct
65 Correct 0 ms 348 KB Output is correct
66 Correct 28 ms 6144 KB Output is correct
67 Correct 117 ms 23892 KB Output is correct
68 Correct 114 ms 24144 KB Output is correct
69 Correct 119 ms 23944 KB Output is correct
70 Correct 0 ms 348 KB Output is correct
71 Incorrect 0 ms 348 KB Answer gives possible 0 while actual possible 1
72 Halted 0 ms 0 KB -